Corsa F drivers door information

[zudrick]

I have trolled through all the available information and i'm unable to find any info on the drivers door mirror symbols that display on my corsa f, sometimes there's a yellow circle(like a fireball) displayed but i have no idea what it is trying to tell me does anyone know/where i can get any info on this?

[Cobra26]

Is that not just telling you there's a car in your blind spot or the blind spot detection is active.